(\vec{A}=6\hat{i}+3\hat{j}-5\hat{k}) এবং (\vec{B}=-4\hat{i}-5\hat{j}+2\hat{k}) হলে (\vec{A}-\vec{B}) এর মান নির্ণয় কর।
A. (10\hat{i}-8\hat{j}+2\hat{k})
B. (10\hat{i}+8\hat{j}-7\hat{k})
C. (5\hat{i}-7\hat{j}-5\hat{k})
D. (2\hat{i}-8\hat{j}+7\hat{k})
সঠিক উত্তরঃ
B.
(10\hat{i}+8\hat{j}-7\hat{k})
Explanation: (\vec{A}-\vec{B}=(6\hat{i}+3\hat{j}-5\hat{k})-(-4\hat{i}-5\hat{j}+2\hat{k}) = (6+4)\hat{i}+(3+5)\hat{j}+(-5-2)\hat{k} = 10\hat{i}+8\hat{j}-7\hat{k}\).
